<template>
  <div class="tab-bar-item" @click="itemClick">
    <div v-if="!isActive">
      <slot name="item-icon"></slot>
    </div>
    <div v-else>
      <slot name="item-icon-active"></slot>
    </div>
    <div :style="activeStyle"><slot name="item-text"></slot></div>
  </div>
</template>

<script>
export default {
  name:"TabBarItem",
  props:{
    path:String,
    activeColor:{
      type:String,
      default:'red'
    }
  },
  data(){
    return {
      // isActive:true
    }
  },
  computed:{
    isActive(){
      //判断
      //return this.$route.path.indexOf(this.path) !== -1
      //return this.$route.path === this.path
      return this.$route.path.indexOf(this.path)?false:true
    },
    activeStyle(){
      return this.isActive?{color:this.activeColor}:{}
    }
  },
  methods:{
    itemClick(){
      this.$router.replace(this.path)
    }
  }

}
</script>

<style>
#tab-bar{
  display: flex;

}
#tab-bar{
  background-color: #f6f6f6;
  border-top: 2px #ccc;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  box-shadow:0px -1px 1px rgba(100,100,100,.2) ;
}
.tab-bar-item{
  flex: 1;
  text-align: center;
  height: 49px;
  font-size: 14px;
}
.tab-bar-item img{
  width: 24px;
  height: 24px;
  margin-top: 3px;
  vertical-align: middle;
  margin-bottom: 3px;
}
.active{
  color: red;
}
</style>
